CN202978329U - Combined-type field test power box - Google Patents
Combined-type field test power box Download PDFInfo
- Publication number
- CN202978329U CN202978329U CN 201220617317 CN201220617317U CN202978329U CN 202978329 U CN202978329 U CN 202978329U CN 201220617317 CN201220617317 CN 201220617317 CN 201220617317 U CN201220617317 U CN 201220617317U CN 202978329 U CN202978329 U CN 202978329U
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- China
- Prior art keywords
- power supply
- vehicle
- battery
- field test
- combined
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Electric Propulsion And Braking For Vehicles (AREA)
- Secondary Cells (AREA)
Abstract
The utility model discloses a combined-type field test power box characterized in that: a 12 V optional power supply is provided by a vehicle-mounted battery, a storage lithium battery, or a vehicle-mounted cigar lighter; a sinewave inverter is arranged and used to select the vehicle-mounted battery, the storage battery, or the vehicle-mounted cigar lighter to be the input terminal power supply through a change-over switch; and a single-phase alternating-current power supply output through the inversion by the sinewave inverter is utilized as a working power supply for an field test. The combined-type field test power box utilizes the vehicle-mounted battery, the storage battery, or the vehicle-mounted cigar lighter to provide the 12 V direct-current power supply and provides the standard single-phase alternating-current power supply to a field by virtue of the inversion in a manner that the mode is simple and the implementation is easy.
Description
Technical field
The utility model relates to a kind of combined on site electric source for test purposes case, is applied to power industry field test and service work.
Background technology
In the power industry work on the spot, the staff often will come work with electric tool or electronic measuring instrument.But limit by field condition, a lot of scenes do not have the single phase industrial frequence AC power, cause some work can not normally not carry out because the scene there is no power supply.
For guaranteeing the electric power meter accurate measurement, power supply department need to be to operating voltage and current instrument transformer periodic check.Because the mutual inductor on site verification need to be carried out under the power failure condition, and instrument transformer generally is arranged on the power supply place, if want instrument transformer to have a power failure, wholely all can have a power failure by electric zone, and field-checking can't carry out.Traditional way is that Indoor is done by the instrument transformer laboratory that takes metrological service after instrument transformer is pulled down, if assay approval, then instrument transformer is installed to the original place, whole verification process is time-consuming, effort, and interruption duration is long.
Summary of the invention
The utility model is for avoiding the existing weak point of above-mentioned prior art, a kind of combined on site power box for high tension testing being provided, in order to the single phase alternating current power supply of standard is provided for the scene.
The utility model is that the technical solution problem adopts following technical scheme:
The design feature of the utility model combined on site electric source for test purposes case is: provide the 12V DC power supply by on-vehicle battery, storage battery or vehicle-mounted cigarette lighter; Sinewave inverter is set, and described sinewave inverter is selected take on-vehicle battery, storage battery or vehicle-mounted cigarette lighter as the input power supply by diverter switch; With the single phase alternating current power supply of described sinewave inverter inversion output as the field test working power.
Compared with the prior art, the utility model beneficial effect is embodied in:
The optional power supply of the direct current that the utility model utilizes on-vehicle battery, storage battery or vehicle-mounted cigarette lighter to provide, electric pressure are 12V, and the single phase alternating current power supply of standard is provided for the scene by inversion, and its mode is simple, easy to implement.
Description of drawings
Fig. 1 is the utility model circuit theory schematic diagram;
Fig. 2 is the utility model electrical wiring schematic diagram.
Embodiment
Referring to Fig. 1, in the present embodiment, the version of combined on site electric source for test purposes case is: by on-vehicle battery, hold (lithium) battery or vehicle-mounted cigarette lighter provides DC power supply, electric pressure is 12V; Sinewave inverter is set, and sinewave inverter is selected take on-vehicle battery, is held (lithium) battery or vehicle-mounted cigarette lighter is the input power supply by diverter switch; With the single phase alternating current power supply of sinewave inverter inversion output as the field test working power.
In use, inverter output is connected to electrical appliance, should guarantees that load power source is the nominal power supply of inverter, and starting current can not surpass the peaking capacity of inverter.
In concrete enforcement, upper cover and lower box are set consist of power box, place 12V lithium battery and sinewave inverter in lower box, take upper cover as panel, the devices such as earth leakage protector, plug-in strip, voltmeter, under-voltage indicator light, power supply indicator, socket, output wiring terminal are set respectively on panel.
Figure 2 shows that electrical schematic diagram, the input of 12V direct current is carried out under-voltage detection through power management module, and indicated by under-voltage indicator light 1, plug-in strip 2 is used for mains switch, earth leakage protector 3 insures as electricity consumption, power supply indicator 4 is used to indicate the on/off state, output AC220V single phase alternating current power supply on a pairs of posts of power output socket.
Along with power supply and with the AC load continuous firing; on-vehicle battery or the electric energy that holds (lithium) battery can reduce gradually; its output dc voltage value also can diminish gradually; when voltage during less than set point; under-voltage indicator light is bright; power management module cuts off direct-current input power supplying, with protective circuit, at this moment should in time charge to battery.
Claims (1)
1. a combined on site power box for high tension testing, is characterized in that: provide the 12V DC power supply by on-vehicle battery, storage battery or vehicle-mounted cigarette lighter; Sinewave inverter is set, and described sinewave inverter is selected take on-vehicle battery, storage battery or vehicle-mounted cigarette lighter as the input power supply by diverter switch; With the single phase alternating current power supply of described sinewave inverter inversion output as the field test working power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220617317 CN202978329U (en) | 2012-11-20 | 2012-11-20 | Combined-type field test power box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220617317 CN202978329U (en) | 2012-11-20 | 2012-11-20 | Combined-type field test power box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202978329U true CN202978329U (en) | 2013-06-05 |
Family
ID=48519354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220617317 Expired - Fee Related CN202978329U (en) | 2012-11-20 | 2012-11-20 | Combined-type field test power box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202978329U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103472274A (en) * | 2013-09-23 | 2013-12-25 | 国网安徽省电力公司淮南供电公司 | Portable electric energy measurement terminal experiment power source |
| CN105098962A (en) * | 2015-09-13 | 2015-11-25 | 国家电网公司 | Multipurpose vehicle-mounted meter reading power supply |
-
2012
- 2012-11-20 CN CN 201220617317 patent/CN202978329U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103472274A (en) * | 2013-09-23 | 2013-12-25 | 国网安徽省电力公司淮南供电公司 | Portable electric energy measurement terminal experiment power source |
| CN105098962A (en) * | 2015-09-13 | 2015-11-25 | 国家电网公司 | Multipurpose vehicle-mounted meter reading power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20201120 |